APA

Willhardt M. E., . (2000). Whos who in twentieth century world poetry. : Routledge & Kegan Paul Ltd., London.

Chicago

Willhardt Mark Ed, . 2000. Whos who in twentieth century world poetry. : Routledge & Kegan Paul Ltd., London.

Harvard

Willhardt M. E., . (2000). Whos who in twentieth century world poetry. : Routledge & Kegan Paul Ltd., London.

MLA

Willhardt Mark Ed, . Whos who in twentieth century world poetry. : Routledge & Kegan Paul Ltd., London. 2000.